NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Chemistry MCQs (Practice_Test 22 of 31)
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- Uranium-235 decays via a sequence of seven alpha decays and four beta decays to produce a stable nuclide. Which of the following is the nuclide that is produced?
- tungsten-207
- lead-207
- actinium-235
- proactinium-219
- uranium-238
- The half-life of tritium is 12.3 years. If 48.0 mg of tritium is released from a nuclear power plant during the course of an accident, calculate the mass (in mg) of the nuclide that will remain after 5.0 years.
- Nuclides that have neutron-to-proton ratios that are too HIGH (compared with stable nuclides) are expected to undergo:
- alpha decay.
- beta decay.
- positron decay.
- electron capture.
- none of the above:
- Radon-222 is a potentially serious problem in many homes. From which of the following naturally-occurring nuclides is radon-222 produced?
- carbon-12
- potassium-40
- iron-56
- thorium-232
- uranium-238
- Consider the following types of medical procedures
- PET (Positron Emission Tomography) scan
- CAT (Computerized Axial Tomography) scan
- MRI (Magnetic Resonance Imaging) scan
- Iodine-131 treatment of hyperthyroidism
- Which of these procedures involves X-rays?
- 1 and 3
- 2 and 4
- 3 and 4
- 1 only
- 2 only